You're broadening the filter slopes by decreasing taps.
Barry N1EU
On Thu, Oct 2, 2014 at 1:54 PM, Kim Elmore <cw_de_n5op@sbcglobal.net> wrote:
> Within the DSP setup in the O2 (and probably the other TT DSP radios) we
> can select the number of "taps," which I think sets the number if samples
> or the sample interval.
>
> I played with that some time ago and, while it was a bit buggy for certain
> selections, it changed the timbre of the recover audio. My personal
> impression was that it tended to sound "more analog."
>
> This isn't completely OT, because the discussion centers around how
> pleasant the Corsair II audio sounds. Has anyone else played with the
> number of taps within the DSP set up and come away with similar impressions?
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as
> the music lasts." -- Paul Hindemith
>
> > On Oct 2, 2014, at 7:56, Barry N1EU <barry.n1eu@gmail.com> wrote:
> >
> > (in an attempt to unhijack the thread)
> >
> > Steve, I think it's a great idea. Alternate solution would be
> > redesign/modenization of individual circuit boards that could be done as
> a
> > community project for all those Corsairs out there. The if/af board
> would
> > be a prime target.
> >
> > 73, Barry N1EU
> >
> >> On Thu, Oct 2, 2014 at 12:44 PM, Rick - DJ0IP / NJ0IP <Rick@dj0ip.de>
> wrote:
> >>
> >> Most of the time, when I'm tuning the bands I have my eyes closed.
> >> Otherwise I just put a brown paper bag over the Eagle and get on with
> it!
> >> ;-)
> >>
> >> 73 - Rick, DJ0IP
> >> (Nr. Frankfurt am Main)
> >>
> >>
> >> -----Original Message-----
> >> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Martin
> >> Sole
> >> (HS0ZED)
> >> Sent: Thursday, October 02, 2014 2:27 PM
> >> To: Discussion of Ten-Tec Equipment
> >> Subject: Re: [TenTec] Modern version of the Tec Tec Corsair - please Ten
> >> Tec!
> >>
> >> You're right indeed!
> >>
> >> Now 11 deg N and 100 deg E is a place where the band conditions rarely
> >> exceed those of the 60's so my KWM2A still holds up well most of the
> time
> >> though I wouldn't use it in a pile up for a new one or a contest, for
> sure
> >> you then see it fall flat on it's 50's designed faceplate. As to the
> >> filter,
> >> again, no good in EU today but in the right environment it still has a
> >> certain something. Hard to put the finger on.
> >>
> >> I never liked the look of the Eagle. Great performer though it no doubt
> is.
> >> Put it in a bigger box with a Collins S line style front panel with more
> >> knobs and I'd probably buy a dozen, heat not required!
> >>
> >> Martin, HS0ZED
> >>
> >>
> >>
> >>> On 02/10/2014 14:42, Rick - DJ0IP / NJ0IP wrote:
> >>> As nice as its audio was, the KWM-2 would not be very good with
> >>> today's crowded bands.
> >>> The famous "Collins mechanical filter" was not really very good by
> >>> today's standards.
> >>> A 4-pole crystal filter on 455 kHz is as good or better and of course
> >>> you can buy 6 or 8 pole filters now.
> >>> And the DSP filters on lower frequencies are even better, sharper, and
> >>> have steeper skirts.
> >>>
> >>> As long as we're dreaming, I wish I had 1960's band conditions again!
> >>>
> >>> All things considered, it's hard to beat the Corsair with its
> >>> combination of good audio and good crystal filters.
> >>> Newer radios have better filters but worse audio.
> >>>
> >>> For my money, the best compromise is the Eagle.
> >>>
> >>> 73 - Rick, DJ0IP
> >>> (Nr. Frankfurt am Main)
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
> >>> Martin Sole
> >>> (HS0ZED)
> >>> Sent: Thursday, October 02, 2014 11:37 AM
> >>> To: Discussion of Ten-Tec Equipment
> >>> Subject: Re: [TenTec] Modern version of the Tec Tec Corsair - please
> >>> Ten Tec!
> >>>
> >>> I've long liked the analogue radio sound. So far my all time fave,
> >>> just for the audio, is a KWM2 with that big 6x4 speaker, something
> >>> about that warm sound seems magical. Next up from my current radios
> >>> would be my Omni V. Not sure how that might differ from the Corsair
> >>> but whilst generally pleasant it's not in the KWM2 league. Then the
> >>> Orion 565 and Elecraft K3, bit of a mixed bag these two as they are
> >>> both very variable but I've not yet been able to recreate the analogue
> >>> sound. I might need to experiment with amplifiers right at the point
> >>> the signal becomes analogue. A god analogue audio amp with LTP input
> >>> and complementary pair output in discrete silicon feeding a big
> speaker,
> >> might sound very different.
> >>>
> >>> The TS940 had good audio too but for me about the same as the Omni V
> >>>
> >>> Martin, HS0ZED
> >>>
> >>>
> >>>> On 02/10/2014 12:03, Barry N1EU wrote:
> >>>> On Wed, Oct 1, 2014 at 5:12 PM, John Farler <k4avx1@windstream.net>
> >> wrote:
> >>>>
> >>>>> I have a Corsair II with the DDS VFO, which works nicely. I think
> >>>>> it's a single conversion though.
> >>>> Normally it converts to 9MHz, then to 6.3MHz, and then back to 9MHz,
> >>>> unless you bypass the 6.3MHz PBT i.f. which can be done fairly easily
> >>>> but you lose PBT and narrow filters and don't gain much.
> >>>>
> >>>> I agree on the CAT comment. I always dreamed of adding a CAT port to
> >>>> the DDS cpu firmware.
> >>>>
> >>>> 73, Barry N1EU
> >>>> _______________________________________________
> >>>> TenTec mailing list
> >>>> TenTec@contesting.com
> >>>> http://lists.contesting.com/mailman/listinfo/tentec
> >>> _______________________________________________
> >>> TenTec mailing list
> >>> TenTec@contesting.com
> >>> http://lists.contesting.com/mailman/listinfo/tentec
> >>>
> >>> _______________________________________________
> >>> TenTec mailing list
> >>> TenTec@contesting.com
> >>> http://lists.contesting.com/mailman/listinfo/tentec
> >>
> >> _______________________________________________
> >> TenTec mailing list
> >> TenTec@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/tentec
> >>
> >> _______________________________________________
> >> TenTec mailing list
> >> TenTec@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/tentec
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|